MESON Chess Problem Database

Problem Display
PID: 154487 (1qQN1B2/2N5/Rr1P2Kn/P1k5/Pb6/1P2P1p1/3rp3/3R4 w - - 0 1)

Malishev, Aleksandr Fedorovich

Zadachi i Etyudi, 1995

1qQN1B2/2N5/Rr1P2Kn/P1k5/Pb6/1P2P1p1/3rp3/3R4

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Sce6#
      • 2.Rd5#
    • 1...Rb2
      • 2.Sce6#
      • 2.Rd5#
    • 1...Rc2
      • 2.Sce6#
      • 2.Rd5#
    • 1...Rd4
      • 2.exd4#
    • 1...Rd5
      • 2.Sce6#
      • 2.Rxd5#
    • 1...Rdxd6+
      • 2.Sce6#
    • 1...Rb5
      • 2.Sde6#
      • 2.Rc6#
    • 1...Rc6
      • 2.Sde6#
      • 2.Rxc6#
    • 1...Rbxd6+
      • 2.Sde6#
    • 1...Rb7
      • 2.Sde6#
      • 2.Rc6#
  • Tries
    • 1.Qg4?
      • threat
        • 2.Qc4#
      • 1...Rdxd6+
        • 2.Sce6#
      • 1...Rbxd6+
        • 2.Sde6#
      • 1...Rc2
        • 2.Sce6#
        • 2.Rd5#
        • 2.Qd4#
      • 1...Rd4
        • 2.Qxd4#
        • 2.exd4#
      • 1...Sxg4!
    • 1.Qf5+?
      • 1...Rd5
        • 2.Sce6#
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Sxf5!
    • 1.Qxb8?
      • threat
        • 2.Qxb6#
      • 1...Rdxd6+
        • 2.Sce6#
      • 1...Rbxd6+
        • 2.Sde6#
      • 1...Rxa6
        • 2.Qb5#
      • 1...Rxb8
        • 2.Sde6#
        • 2.Rc6#
      • 1...Rb5
        • 2.Sde6#
        • 2.Rc6#
        • 2.Qxb5#
      • 1...Rc6
        • 2.Sde6#
        • 2.Sb7#
        • 2.Rxc6#
        • 2.Qb5#
      • 1...Rb7
        • 2.Sde6#
        • 2.Sxb7#
        • 2.Rc6#
      • 1...Bxa5!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qc4#
      • 1...Rdxd6
        • 2.Rd5#
      • 1...Rbxd6
        • 2.Rc6#
      • 1...Rc2
        • 2.Rd5#
        • 2.Qd5#
        • 2.Qe5#
      • 1...Rd4
        • 2.exd4#
      • 1...Rd5
        • 2.Rxd5#
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE::P(C),XR(a)
    • R(a);CHECK,P_SPINR(a),XP(G)::QAR(J)+S(I),DCHECK
    • R(f);CHECK,P_SPINR(f),XP(G)::S(K)
  • Tries
    • Try
      • Q(J);
      • Threat
        • QAR1(J)
      • Vars
        • R(a);CHECK,P_SPINR(a),XP(G)::S(I)
        • R(f);CHECK,P_SPINR(f),XP(G)::S(K)
      • Refutation
        • S(g);XQ(J)
    • Try
      • Q(J);CHECK
      • Refutation
        • S(g);XQ(J)
    • Try
      • Q(J);XQ(h)
      • Threat
        • QAB1(J),XR(f)
      • Vars
        • R(a);CHECK,P_SPINR(a),XP(G)::S(I)
        • R(f);CHECK,P_SPINR(f),XP(G)::S(K)
        • R(f);OGATE,XR(F)::QAR1(J)
      • Refutation
        • B(d);XP(E)
  • Actual
    • Q(J);N_SPINP(G)
    • Threat
      • QAR1(J)
    • Vars
      • R(a);OGATE,P_PINQ(J),P_SPINR(a),XP(G)::R1(A)
      • R(f);OGATE,P_PINQ(J),P_SPINR(f),XP(G)::R1(F)
      • R(a);OGATE::P(C),XR(a)
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